{"id":493,"date":"2022-09-20T17:02:56","date_gmt":"2022-09-20T17:02:56","guid":{"rendered":"https:\/\/books.gw-project.org\/introduction-to-isotopes-and-environmental-tracers-as-indicators-of-groundwater-flow\/?post_type=part&#038;p=493"},"modified":"2022-09-20T17:35:31","modified_gmt":"2022-09-20T17:35:31","slug":"notations","status":"publish","type":"part","link":"https:\/\/books.gw-project.org\/introduction-to-isotopes-and-environmental-tracers-as-indicators-of-groundwater-flow\/part\/notations\/","title":{"raw":"9  Notations","rendered":"9  Notations"},"content":{"raw":"<div class=\"notations\">\r\n<table style=\"border-collapse: collapse; width: 100%;\">\r\n<tbody>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>C<\/em><\/td>\r\n<td style=\"vertical-align: top;\">measured concentration of radioactive tracer (Radioactivity L<sup>-3<\/sup>)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>c<\/em><sub><em>o<\/em><\/sub><\/td>\r\n<td style=\"vertical-align: top;\">initial concentration of radioactive tracer (Radioactivity L<sup>-3<\/sup>)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>c<\/em><sub><em>1<\/em><\/sub><\/td>\r\n<td style=\"vertical-align: top;\">concentration of conservative tracer in end-member water 1 (Radioactivity L<sup>-3<\/sup>) or (ML<sup>-3<\/sup>)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>c<\/em><sub><em>2<\/em><\/sub><\/td>\r\n<td style=\"vertical-align: top;\">concentration of conservative tracer in end-member water 2 (Radioactivity L<sup>-3<\/sup>) or (ML<sup>-3<\/sup>)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>c<\/em><sub><em>Ai<\/em><\/sub><\/td>\r\n<td style=\"vertical-align: top;\">concentration of tracer A in end-member water n (Radioactivity L<sup>-3<\/sup>) or (ML<sup>-3<\/sup>)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>c<\/em><sub><em>Am<\/em><\/sub><\/td>\r\n<td style=\"vertical-align: top;\">concentration of tracer A in mixture (Radioactivity L<sup>-3<\/sup>) or (ML<sup>-3<\/sup>)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>c<\/em><sub><em>d<\/em><\/sub><\/td>\r\n<td style=\"vertical-align: top;\">daughter concentration (Radioactivity L<sup>-3<\/sup>)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>C<\/em><sub><em>a<\/em><\/sub><\/td>\r\n<td style=\"vertical-align: top;\">concentration in dry air (ML<sup>-3<\/sup>)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>c<\/em><sub><em>m<\/em><\/sub><\/td>\r\n<td style=\"vertical-align: top;\">concentration in the mixed water (ML<sup>-3<\/sup>)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>c<\/em><sub><em>p<\/em><\/sub><\/td>\r\n<td style=\"vertical-align: top;\">parent concentration (Radioactivity L<sup>-3<\/sup>)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>C<\/em><sub><em>w<\/em><\/sub><\/td>\r\n<td style=\"vertical-align: top;\">concentration dissolved in water (ML<sup>-3<\/sup>)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>D<\/em><\/td>\r\n<td style=\"vertical-align: top;\">diffusion coefficient of the tracer (L<sup>2<\/sup>T<sup>-<\/sup><sup>1<\/sup>)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>\u03b4<\/em><\/td>\r\n<td style=\"vertical-align: top;\">isotope ratio relative to a standard (dimensionless)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>f<\/em><\/td>\r\n<td style=\"vertical-align: top;\">proportion of end-member 1 in the mixture (dimensionless)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>1\u00a0-\u00a0f<\/em><\/td>\r\n<td style=\"vertical-align: top;\">proportion of end-member 2 in the mixture (dimensionless)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>f<\/em><sub><em>n<\/em><\/sub><\/td>\r\n<td style=\"vertical-align: top;\">proportion of end-member \u2018n\u2019 (dimensionless)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>H<\/em><\/td>\r\n<td style=\"vertical-align: top;\">thickness (L)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>K<\/em><sub><em>H<\/em><\/sub><\/td>\r\n<td style=\"vertical-align: top;\">Henry\u2019s Law constant (dimensionless)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>\u03bb<\/em><\/td>\r\n<td style=\"vertical-align: top;\">decay constant (T<sup>-<\/sup><sup>1<\/sup>)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>v<\/em><sub><em>h<\/em><\/sub><\/td>\r\n<td style=\"vertical-align: top;\">horizontal groundwater velocity (LT<sup>-<\/sup><sup>1<\/sup>)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>P<\/em><\/td>\r\n<td style=\"vertical-align: top;\">total atmospheric pressure (ML<sup>-<\/sup><sup>1<\/sup>T<sup>-<\/sup><sup>2<\/sup>)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>p<\/em><sub><em>H2O<\/em><\/sub><\/td>\r\n<td style=\"vertical-align: top;\">water vapor pressure (ML<sup>-<\/sup><sup>1<\/sup>T<sup>-<\/sup><sup>2<\/sup>)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>R<\/em><\/td>\r\n<td style=\"vertical-align: top;\">in Equation 4, ratio of isotope amount, usually less abundant to most abundant isotope (dimensionless)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>R<\/em><\/td>\r\n<td style=\"vertical-align: top;\">in Equation 10, constant recharge (LT<sup>-<\/sup><sup>1<\/sup>)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>R<\/em><\/td>\r\n<td style=\"vertical-align: top;\">in Equation 13, recharge rate (LT<sup>-<\/sup><sup>1<\/sup>)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>t<\/em><\/td>\r\n<td style=\"vertical-align: top;\">in Equation 1, time (T)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>t<\/em><\/td>\r\n<td style=\"vertical-align: top;\">in Equation 10, groundwater age (T)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>t<\/em><sub>1<\/sub> and <em>t<\/em><sub>2<\/sub><\/td>\r\n<td style=\"vertical-align: top;\">groundwater ages at two points in the confined part of the aquifer (T)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>\u03b8<\/em><\/td>\r\n<td style=\"vertical-align: top;\">porosity (dimensionless)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>t<\/em><sub>1\/2<\/sub><\/td>\r\n<td style=\"vertical-align: top;\">half-life of radioactive tracer (T)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>t<\/em><sub>mix<\/sub><\/td>\r\n<td style=\"vertical-align: top;\">extent of well mixing (measured in years) (T)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>x<\/em><\/td>\r\n<td style=\"vertical-align: top;\">distance (L)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>x<\/em><sub>2<\/sub> - <em>x<\/em><sub>1<\/sub><\/td>\r\n<td style=\"vertical-align: top;\">distance between locations (L)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>z<\/em><\/td>\r\n<td style=\"vertical-align: top;\">depth below the water table (L)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"vertical-align: top;\"><em>z<\/em><sub>well<\/sub><\/td>\r\n<td style=\"vertical-align: top;\">length of the well intake zone (L)<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>","rendered":"<div class=\"notations\">\n<table style=\"border-collapse: collapse; width: 100%;\">\n<tbody>\n<tr>\n<td style=\"vertical-align: top;\"><em>C<\/em><\/td>\n<td style=\"vertical-align: top;\">measured concentration of radioactive tracer (Radioactivity L<sup>-3<\/sup>)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>c<\/em><sub><em>o<\/em><\/sub><\/td>\n<td style=\"vertical-align: top;\">initial concentration of radioactive tracer (Radioactivity L<sup>-3<\/sup>)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>c<\/em><sub><em>1<\/em><\/sub><\/td>\n<td style=\"vertical-align: top;\">concentration of conservative tracer in end-member water 1 (Radioactivity L<sup>-3<\/sup>) or (ML<sup>-3<\/sup>)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>c<\/em><sub><em>2<\/em><\/sub><\/td>\n<td style=\"vertical-align: top;\">concentration of conservative tracer in end-member water 2 (Radioactivity L<sup>-3<\/sup>) or (ML<sup>-3<\/sup>)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>c<\/em><sub><em>Ai<\/em><\/sub><\/td>\n<td style=\"vertical-align: top;\">concentration of tracer A in end-member water n (Radioactivity L<sup>-3<\/sup>) or (ML<sup>-3<\/sup>)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>c<\/em><sub><em>Am<\/em><\/sub><\/td>\n<td style=\"vertical-align: top;\">concentration of tracer A in mixture (Radioactivity L<sup>-3<\/sup>) or (ML<sup>-3<\/sup>)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>c<\/em><sub><em>d<\/em><\/sub><\/td>\n<td style=\"vertical-align: top;\">daughter concentration (Radioactivity L<sup>-3<\/sup>)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>C<\/em><sub><em>a<\/em><\/sub><\/td>\n<td style=\"vertical-align: top;\">concentration in dry air (ML<sup>-3<\/sup>)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>c<\/em><sub><em>m<\/em><\/sub><\/td>\n<td style=\"vertical-align: top;\">concentration in the mixed water (ML<sup>-3<\/sup>)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>c<\/em><sub><em>p<\/em><\/sub><\/td>\n<td style=\"vertical-align: top;\">parent concentration (Radioactivity L<sup>-3<\/sup>)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>C<\/em><sub><em>w<\/em><\/sub><\/td>\n<td style=\"vertical-align: top;\">concentration dissolved in water (ML<sup>-3<\/sup>)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>D<\/em><\/td>\n<td style=\"vertical-align: top;\">diffusion coefficient of the tracer (L<sup>2<\/sup>T<sup>&#8211;<\/sup><sup>1<\/sup>)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>\u03b4<\/em><\/td>\n<td style=\"vertical-align: top;\">isotope ratio relative to a standard (dimensionless)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>f<\/em><\/td>\n<td style=\"vertical-align: top;\">proportion of end-member 1 in the mixture (dimensionless)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>1\u00a0&#8211;\u00a0f<\/em><\/td>\n<td style=\"vertical-align: top;\">proportion of end-member 2 in the mixture (dimensionless)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>f<\/em><sub><em>n<\/em><\/sub><\/td>\n<td style=\"vertical-align: top;\">proportion of end-member \u2018n\u2019 (dimensionless)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>H<\/em><\/td>\n<td style=\"vertical-align: top;\">thickness (L)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>K<\/em><sub><em>H<\/em><\/sub><\/td>\n<td style=\"vertical-align: top;\">Henry\u2019s Law constant (dimensionless)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>\u03bb<\/em><\/td>\n<td style=\"vertical-align: top;\">decay constant (T<sup>&#8211;<\/sup><sup>1<\/sup>)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>v<\/em><sub><em>h<\/em><\/sub><\/td>\n<td style=\"vertical-align: top;\">horizontal groundwater velocity (LT<sup>&#8211;<\/sup><sup>1<\/sup>)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>P<\/em><\/td>\n<td style=\"vertical-align: top;\">total atmospheric pressure (ML<sup>&#8211;<\/sup><sup>1<\/sup>T<sup>&#8211;<\/sup><sup>2<\/sup>)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>p<\/em><sub><em>H2O<\/em><\/sub><\/td>\n<td style=\"vertical-align: top;\">water vapor pressure (ML<sup>&#8211;<\/sup><sup>1<\/sup>T<sup>&#8211;<\/sup><sup>2<\/sup>)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>R<\/em><\/td>\n<td style=\"vertical-align: top;\">in Equation 4, ratio of isotope amount, usually less abundant to most abundant isotope (dimensionless)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>R<\/em><\/td>\n<td style=\"vertical-align: top;\">in Equation 10, constant recharge (LT<sup>&#8211;<\/sup><sup>1<\/sup>)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>R<\/em><\/td>\n<td style=\"vertical-align: top;\">in Equation 13, recharge rate (LT<sup>&#8211;<\/sup><sup>1<\/sup>)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>t<\/em><\/td>\n<td style=\"vertical-align: top;\">in Equation 1, time (T)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>t<\/em><\/td>\n<td style=\"vertical-align: top;\">in Equation 10, groundwater age (T)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>t<\/em><sub>1<\/sub> and <em>t<\/em><sub>2<\/sub><\/td>\n<td style=\"vertical-align: top;\">groundwater ages at two points in the confined part of the aquifer (T)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>\u03b8<\/em><\/td>\n<td style=\"vertical-align: top;\">porosity (dimensionless)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>t<\/em><sub>1\/2<\/sub><\/td>\n<td style=\"vertical-align: top;\">half-life of radioactive tracer (T)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>t<\/em><sub>mix<\/sub><\/td>\n<td style=\"vertical-align: top;\">extent of well mixing (measured in years) (T)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>x<\/em><\/td>\n<td style=\"vertical-align: top;\">distance (L)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>x<\/em><sub>2<\/sub> &#8211; <em>x<\/em><sub>1<\/sub><\/td>\n<td style=\"vertical-align: top;\">distance between locations (L)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>z<\/em><\/td>\n<td style=\"vertical-align: top;\">depth below the water table (L)<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top;\"><em>z<\/em><sub>well<\/sub><\/td>\n<td style=\"vertical-align: top;\">length of the well intake zone (L)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n","protected":false},"parent":0,"menu_order":9,"template":"","meta":{"pb_part_invisible":false,"pb_part_invisible_string":""},"contributor":[],"license":[],"class_list":["post-493","part","type-part","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/books.gw-project.org\/introduction-to-isotopes-and-environmental-tracers-as-indicators-of-groundwater-flow\/wp-json\/pressbooks\/v2\/parts\/493","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/books.gw-project.org\/introduction-to-isotopes-and-environmental-tracers-as-indicators-of-groundwater-flow\/wp-json\/pressbooks\/v2\/parts"}],"about":[{"href":"https:\/\/books.gw-project.org\/introduction-to-isotopes-and-environmental-tracers-as-indicators-of-groundwater-flow\/wp-json\/wp\/v2\/types\/part"}],"version-history":[{"count":7,"href":"https:\/\/books.gw-project.org\/introduction-to-isotopes-and-environmental-tracers-as-indicators-of-groundwater-flow\/wp-json\/pressbooks\/v2\/parts\/493\/revisions"}],"predecessor-version":[{"id":504,"href":"https:\/\/books.gw-project.org\/introduction-to-isotopes-and-environmental-tracers-as-indicators-of-groundwater-flow\/wp-json\/pressbooks\/v2\/parts\/493\/revisions\/504"}],"wp:attachment":[{"href":"https:\/\/books.gw-project.org\/introduction-to-isotopes-and-environmental-tracers-as-indicators-of-groundwater-flow\/wp-json\/wp\/v2\/media?parent=493"}],"wp:term":[{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/books.gw-project.org\/introduction-to-isotopes-and-environmental-tracers-as-indicators-of-groundwater-flow\/wp-json\/wp\/v2\/contributor?post=493"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/books.gw-project.org\/introduction-to-isotopes-and-environmental-tracers-as-indicators-of-groundwater-flow\/wp-json\/wp\/v2\/license?post=493"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}